diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d58bbcd6..44d54d12 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -168,7 +168,7 @@ jobs:
       - name: Sign container image
         if: github.event_name != 'pull_request'
         run: |
-          cosign sign -y --key env://COSIGN_PRIVATE_KEY ${{ steps.registry_case.outputs.lowercase }}/${{ env.IMAGE_NAME }}@${TAGS}
+          cosign sign -y --key env://COSIGN_PRIVATE_KEY ${{ steps.registry_case.outputs.lowercase }}/${{ steps.build_image.outputs.image }}@${TAGS}
         env:
           TAGS: ${{ steps.push.outputs.digest }}
           COSIGN_EXPERIMENTAL: false